how easy is it to unplug injectors .i had the car m o t and serviced 4 weeks ago running fine but i have a red service light on with the message check injection .i ve tried putting injector cleaner in the tank hopeing this would clear the message ,no joy .can you help .the car is a renault scenic 1.9 diesel dymaniquehow easy is it to unplug injectors .i had the car m o t and serviced 4 weeks ago running fine but i have a red service light on with the message check injection .i ve tried putting injector cleaner in the tank hopeing this would clear the message ,no joy .can you help .the car is a renault scenic 1.9 diesel dymanique

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The radio will have to be removed from the car dashboard .Then please quote the MAKE + MODEL of your radio plus ALL the LETTERS and NUMBERS on any LABELS , BARCODES or STAMPED IN THE METAL CASING.Also confirm the MAKE of CAR it is fitted into.